#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>

#define FIFO_NAME "/tmp/myfifo"
#define BUFFER_SIZE PIPE_BUF


int main()
{
	int pipe_fd;
	int res;

	int open_mode = O_RDONLY;
	char buffer[BUFFER_SIZE + 1];
	int bytes = 0;

	memset(buffer, 0, sizeof(buffer));

	printf("Process %d opeining FIFO O_RDONLY \n", getpid());
	pipe_fd = open(FIFO_NAME, open_mode);
	printf("Process %d result %d\n", getpid(), pipe_fd);

	if (pipe_fd != -1) {
		do {
			res = read(pipe_fd, buffer, BUFFER_SIZE);
			bytes += res;
		} while (res > 0);
		close(pipe_fd);
	} else {
		exit(EXIT_FAILURE);
	}

	printf("Process %d finished, %d bytes read\n", getpid(), bytes);
	exit(EXIT_SUCCESS);
}
